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Table 2 Experimental design

From: Green extraction of phenolics and flavonoids from black mulberry fruit using natural deep eutectic solvents: optimization and surface morphology

Independent factors

Units

The value of independent factors

Low (− 1)

Middle (0)

High (+ 1)

X1: LSR

mL/g

50

60

70

X2: Water content

%

30

40

50

X3: Temperature

°C

60

70

80

X4: Time

min

10

15

30

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BMC Chemistry

ISSN: 2661-801X

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